Further torque (Fig.5) results in failure of the engagement of the implant driver to the implant well (arrowhead: the apical end of the osteotomy).  There is a remote possibility that the newly formed buccal plate is fractured.

Fortunately the distal crest is at the same level of the implant plateau.  With bone graft (*: autogenous bone + Osteogen), the implant threads may not be exposed.  Because of the incomplete implant seating, a shorter abutment is used (A: 7.8x4 (4.5) mm).

Incomplete Seating

Xin Wei, DDS, PhD, MS 1st edition 04/13/2015, last revision 04/13/2015